pep8 fixes
pep8 fixes


Former-commit-id: 368a8b5c2ad278b924d8efa2841ebded4d8a3bff [formerly 1931fe0c323ccacab664b99966fae1a8375a2e24]
Former-commit-id: 9afbd1a431de12d78a1a12b330855faa2038d4ee
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine